Grindstone-mounting



F. X. TRUDEL.

GRINDSTONE MOUNTING.

APPLICATION FILED vec zo, 1920.

19386;?43 u Patented Aug. 9, 1921.

FHI?, E Y INVENTQR Vmarras erratas saraar ortica,

GnINDs'roNE-MOUNTING.

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To all whom t may concern.'

Be it known that I, FRANCOIS XAVIER TRUDEL, residing at Shawinigan Falls, in the county of St. Maurice, in the Province of Quebec, in the Dominion of Canada, have invented a new and useful Grindstone- Mounting, of which the following is the specification.

The invention relates to grindstone mounting, as described in the present specication and illustrated in the accompanying drawings that form part of the same.

The invention consists essentially in the novel means employed for reinforcing the stone from its axis.

The objects of the invention are to avoid the dangers to life and property through the bursting of stones; to facilitate the operation of grinding by the precision in the setting to position and maintaining that position; and generally to providea grindstone equipment for wood pulp and other uses that will prove efficient, durable and serviceable.

In the drawings, Figure 1 is a vertical and cross-sectional view of the stone as mounted according to this invention.

Fig. 2 is a side elevation showing a side mounting plate broken away to disclose a reinforcing groove and feed trough.

Like numerals of reference indicate corresponding parts in each figure.

Referring to the drawings, the stone 1- is formed in cylindrical shape having the circumferential grinding surface 2 and the central shaft orifice 3.

The annular recesses 4 are formed in the sides of the stone 1 and surround the shaft orifice 3, said recesses having beveled side walls 5 extending from the bed 6 to the face of the stone at each side.

The radial grooves 7 lead tothe recesses 4 and are made in the side faces of the stone and form feed troughs.

The side plates 8 or flanges are formed with the inwardly projecting hubs 9 and the reinforcing ribs 10 and are screw-threaded on to the shaft 11, which is a little heavier where it passes through the stone though of.

lesser diameter than the central shaft ori- The mounting of the stone 1 is accomplished by first filling inthe space 12 betweenv Specification ofLetters Patent.

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Application led December 20,1926.' "Seral'No, 432,129.

f The space 12 may be entirely or partly lled up by the said packing; of course, it is necessary to hold the stone in a central position in relation to the shaft during this filling process and this is done by wedges or holders not shown, but used in common practice.

The side plates or flanges are screwed up to position in order to assure the proper setting of the stone previous to the lling of the space 12, but removed for filling purposes. After lling, the side plates or flanges are again screwed close to the stone, but not quite home. The stone and edges of side plates are then plastered with mud or other substance to close the cracks between plates and stones leaving the entrances to the feed troughs open.

A semi-liquid solution is poured into grooves or feed troughs 7 and this flows into the recesses 4 around and about the hubs 9 and into the space 12 as far as the lling 13 at each end, and if necessary, tamped to insure the complete filling of the spaces.

This solution is made up of cement and water or other substance that will reach a consistent or hard solid state, and it will be seen that it forms a solid mass completely around the shaft at each end of said stone with the projecting ribs 14 of cement filling the grooves 7. The side plates or flanges 8 are screwed home after the solution has been introduced and the iron is hammered until a good close t is secured.

What I claim is:

1. In a grindstone mounting, a grindstone greater diameter than said shaft and recessed f in the side faces around said orifice and out? wardly from the recesses toward the edges, side plates or fianges forming closures at the ends of said shaft orifice, a filling of a nonbrittle nature in said orice around said shaft and a hard resistant filling in said recesses.v

3. In a grindstone mounting, a shaft having threaded portions forming the ends of an 'enlarved part, a ygrindstone havinga plates forming closures and having inwardly shaft ori'ee of greater diameter than said Yprojecting and interiorly threaded hubs5 and 10 enlarged part and mounted thereon, and a cementitious" illing forf'fs'ai'd' recesses exannular recesses around said orifice 'at theg tending inwardly thereinto from said radial ends having beveled side Walls'and register?" grooves. Y ing vvithradial grooves in the side faces,` a Signed at Montreal, Quebec, Canada, this packingy of compressible material surround- 15th day of December, 1920.

ing said shaft Within said shaft orifice, side FRANCOIS XAVIER TRUDEL. 

